Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e7a2a71fff688c…

MALICIOUS

PDF

63.3 KB Created: 2020-12-21 08:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25a802bd4749192cd241872715a4ffc4 SHA-1: 1e9dfa417d5babddcb24e219756c2e8d74349c31 SHA-256: 38e7a2a71fff688ca4dfe4577e404a1679823c3f6da66cb3eb0b17bf55353775
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Anthills of the savannah themes'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/strik?utm_term=anthills+of+the+savannah+themes
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fd087fc62bd5.pdf
    • https://cdn-cms.f-static.net/uploads/4427529/normal_5fb4541c9dfde.pdf
    • https://cdn-cms.f-static.net/uploads/4480402/normal_5fd79d7edf2e0.pdf
    • https://cdn-cms.f-static.net/uploads/4372373/normal_5f9cd6bb3fa91.pdf
    • https://static.s123-cdn-static.com/uploads/4450440/normal_5fc59dafdfbf2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fdc7a3b0a190b16b315946c/t/5fdcffd484e4936aae31c59e/1608318933181/schneider_nsx_mccb_catalogue_2018.pdf
    • https://uploads.strikinglycdn.com/files/1fab8539-6209-4ed2-a000-e5c6739fa7d5/85564360622.pdf
    • https://uploads.strikinglycdn.com/files/996ebdcf-b7ce-4d99-994a-6078f89a5e4b/77835155276.pdf
    • https://uploads.strikinglycdn.com/files/311f3377-4bc9-45b8-8f28-c3d35fadc35e/35971432761.pdf
    • https://uploads.strikinglycdn.com/files/03d2f5f4-dd45-4fb8-8e0f-d0fa39230d8b/31486683615.pdf
    • https://uploads.strikinglycdn.com/files/6c24e807-d992-440a-b066-b510023d1bd2/manual_sort_in_excel_pivot_table.pdf
    • https://uploads.strikinglycdn.com/files/b3d14af6-e79a-4a45-ace0-ae704799137f/sukevexudamejexe.pdf
    • https://static1.squarespace.com/static/5fdd55bb6394b41d64250a19/t/5fddccff0f6c913d44e03faa/1608371456821/cheap_online_formal_dresses_australia.pdf
    • https://uploads.strikinglycdn.com/files/65837543-4000-47d7-84d1-fdb1c15ba8d9/ladaza.pdf
    • https://uploads.strikinglycdn.com/files/adc3bcb0-085c-4438-abf4-ef704895d5a9/animal_crossing_new_leaf_official_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf5f.bin
8b69cb5de60fc3e4f6a51f3d2c8914246574e4a0227ebc67ac6ee547936eef02
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF5F 4960 bytes
font_01_sfnt_off0000d022.bin
243795a063e4525e87fd8888eaf394e9f1693d19bb2f11071d917b7c09f461fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xD022 9420 bytes